/*
 * Copyright (c) 2013 Grzegorz Kostka (kostka.grzegorz@gmail.com)
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * - Redistributions of source code must retain the above copyright
 *   notice, this list of conditions and the following disclaimer.
 * - Redistributions in binary form must reproduce the above copyright
 *   notice, this list of conditions and the following disclaimer in the
 *   documentation and/or other materials provided with the distribution.
 * - The name of the author may not be used to endorse or promote products
 *   derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <getopt.h>
#include <stdbool.h>
#include <inttypes.h>
#include <time.h>
#include <unistd.h>
#include <sys/time.h>

#include <ext4.h>
#include "../blockdev/linux/file_dev.h"
#include "../blockdev/windows/file_windows.h"
#include "common/test_lwext4.h"

#ifdef WIN32
#include <windows.h>
#endif

/**@brief   Input stream name.*/
char input_name[128] = "ext_images/ext2";

/**@brief   Read-write size*/
static int rw_szie = 1024 * 1024;

/**@brief   Read-write size*/
static int rw_count = 10;

/**@brief   Directory test count*/
static int dir_cnt = 0;

/**@brief   Cleanup after test.*/
static bool cleanup_flag = false;

/**@brief   Block device stats.*/
static bool bstat = false;

/**@brief   Superblock stats.*/
static bool sbstat = false;

/**@brief   Indicates that input is windows partition.*/
static bool winpart = false;

/**@brief   Verbose mode*/
static bool verbose = 0;

/**@brief   Block device handle.*/
static struct ext4_blockdev *bd;

/**@brief   Block cache handle.*/
static struct ext4_bcache *bc;

static const char *usage = "                                    \n\
Welcome in ext4 generic demo.                                   \n\
Copyright (c) 2013 Grzegorz Kostka (kostka.grzegorz@gmail.com)  \n\
Usage:                                                          \n\
[-i] --input    - input file         (default = ext2)           \n\
[-w] --rw_size  - single R/W size    (default = 1024 * 1024)    \n\
[-c] --rw_count - R/W count          (default = 10)             \n\
[-d] --dirs   - directory test count (default = 0)              \n\
[-l] --clean  - clean up after test                             \n\
[-b] --bstat  - block device stats                              \n\
[-t] --sbstat - superblock stats                                \n\
[-w] --wpart  - windows partition mode                          \n\
\n";

void io_timings_clear(void)
{
}

const struct ext4_io_stats *io_timings_get(uint32_t time_sum_ms)
{
    return NULL;
}

uint32_t tim_get_ms(void)
{
    struct timeval t;
    gettimeofday(&t, NULL);
    return (t.tv_sec * 1000) + (t.tv_usec / 1000);
}

uint64_t tim_get_us(void)
{
    struct timeval t;
    gettimeofday(&t, NULL);
    return (t.tv_sec * 1000000) + (t.tv_usec);
}

static bool open_linux(void)
{
    file_dev_name_set(input_name);
    bd = file_dev_get();
    if (!bd) {
        printf("open_filedev: fail\n");
        return false;
    }
    return true;
}

static bool open_windows(void)
{
#ifdef WIN32
    file_windows_name_set(input_name);
    bd = file_windows_dev_get();
    if (!bd) {
        printf("open_winpartition: fail\n");
        return false;
    }
    return true;
#else
    printf("open_winpartition: this mode should be used only under windows "
           "!\n");
    return false;
#endif
}

static bool open_filedev(void)
{
    return winpart ? open_windows() : open_linux();
}

static bool parse_opt(int argc, char **argv)
{
    int option_index = 0;
    int c;

    static struct option long_options[] = {
        {"input", required_argument, 0, 'i'},
        {"rw_size", required_argument, 0, 's'},
        {"rw_count", required_argument, 0, 'c'},
        {"dirs", required_argument, 0, 'd'},
        {"clean", no_argument, 0, 'l'},
        {"bstat", no_argument, 0, 'b'},
        {"sbstat", no_argument, 0, 't'},
        {"wpart", no_argument, 0, 'w'},
        {"verbose", no_argument, 0, 'v'},
        {"version", no_argument, 0, 'x'},
        {0, 0, 0, 0}};

    while (-1 != (c = getopt_long(argc, argv, "i:s:c:q:d:lbtwvx",
                      long_options, &option_index))) {

        switch (c) {
        case 'i':
            strcpy(input_name, optarg);
            break;
        case 's':
            rw_szie = atoi(optarg);
            break;
        case 'c':
            rw_count = atoi(optarg);
            break;
        case 'd':
            dir_cnt = atoi(optarg);
            break;
        case 'l':
            cleanup_flag = true;
            break;
        case 'b':
            bstat = true;
            break;
        case 't':
            sbstat = true;
            break;
        case 'w':
            winpart = true;
            break;
        case 'v':
            verbose = true;
            break;
        case 'x':
            puts(VERSION);
            exit(0);
            break;
        default:
            printf("%s", usage);
            return false;
        }
    }
    return true;
}

int main(int argc, char **argv)
{
    if (!parse_opt(argc, argv))
        return EXIT_FAILURE;

    printf("ext4_generic\n");
    printf("test conditions:\n");
    printf("\timput name: %s\n", input_name);
    printf("\trw size: %d\n", rw_szie);
    printf("\trw count: %d\n", rw_count);

    if (!open_filedev()) {
        printf("open_filedev error\n");
        return EXIT_FAILURE;
    }

    if (verbose)
        ext4_dmask_set(DEBUG_ALL);

    if (!test_lwext4_mount(bd, bc))
        return EXIT_FAILURE;

    test_lwext4_cleanup();

    if (sbstat)
        test_lwext4_mp_stats();

    test_lwext4_dir_ls("/mp/");
    fflush(stdout);
    if (!test_lwext4_dir_test(dir_cnt))
        return EXIT_FAILURE;

    fflush(stdout);
    uint8_t *rw_buff = malloc(rw_szie);
    if (!rw_buff) {
        free(rw_buff);
        return EXIT_FAILURE;
    }
    if (!test_lwext4_file_test(rw_buff, rw_szie, rw_count)) {
        free(rw_buff);
        return EXIT_FAILURE;
    }

    free(rw_buff);

    fflush(stdout);
    test_lwext4_dir_ls("/mp/");

    if (sbstat)
        test_lwext4_mp_stats();

    if (cleanup_flag)
        test_lwext4_cleanup();

    if (bstat)
        test_lwext4_block_stats();

    if (!test_lwext4_umount())
        return EXIT_FAILURE;

    printf("\ntest finished\n");
    return EXIT_SUCCESS;
}
